Abstract
Cortinarius anaunianus is described as a new species within the Humolentes clade of the section Calochroi s. lato from alpine silver fir forests (Abies alba) in northeastern Italy (Val di Non, province of Trento). Phylogeny based on the combined nrDNA ITS and LSU, rpb1, rpb2 and the coded gaps of the ITS region supports the independence of C. anaunianus from the closest taxa and its sister position to C. humolens from which it differs by (i) more vivid olivaceous tinges on pileus and lamellae when young, (ii) pileus surface strongly turning ocher-brown with age and exposure (iii) growing in silver fir forests rather than in association with broadleaved trees. Photos of fresh basidiomes in field and a full description of its main macro- and micromorphological features are provided and compared to those of the morphologically most similar species.
References
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Dima, B. & Albert, L. (2011) A Cortinarius humolens Magyarorszàgon-Mikol. Kozelm. Clusiana 50 (2): 141–148.
Eyssartier, G. (2011) Cortinarius lavandulochlorus sp. nov., un nouveau cortinaire proche de C. olivellus Rob. Henry. Journal des J.E.C. 13: 52–57.
Felsenstein, J. (1985) Confidence limits on phylogenies: an approach using the bootstrap. Evolution 39 (4): 783–791. https://doi.org/10.1111/j.1558-5646.1985.tb00420.x
Frøslev, T.G., Matheny, P.B. & Hibbett, D.S. (2005) Lower level relationships in the mushroom genus Cortinarius (Basidiomycota, Agaricales): A comparison of rpb1, rpb2, and ITS phylogenies. Molecular Phylogenetics and Evolution 37 (2): 602–618. https://doi.org/10.1016/j.ympev.2005.06.016
Frøslev, T.G., Brandrud, T.E. & Jeppesen, T.S. (2006) New species and combinations in Cortinarius subgenus Phlegmacium section Calochroi. Mycotaxon 97: 367–377. https://doi.org/10.1016/j.mycres.2006.05.012
Frøslev, T.G., Jeppesen, T.S., Læssøe, T. & Kjøller, R. (2007) Molecular phylogenetics and delimitation of species in Cortinarius section Calochroi (Basidiomycota, Agaricales) in Europe. Molecular Phylogenetics and Evolution 44 (1): 217–227. https://doi.org/10.1016/j.ympev.2006.11.013
Frøslev, T.G., Jeppesen, T.S. & Dima, B. (2015) Cortinarius koldingensis a new species of Cortinarius, subgenus Phlegmacium related to Cortinarius sulfurinus. Mycological Progress 14: 73. https://doi.org/10.1007/s11557-015-1098-z
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Garnica, S., Weiß, M., Oertel, B. & Oberwinkler, F. (2003) Phylogenetic relationships of European Phlegmacium species (Cortinarius, Agaricales). Mycologia 95: 1155–1170. https://doi.org/10.1080/15572536.2004.11833025
Garnica, S., Weiß, M., Oertel, B. & Oberwinkler, F. (2005) A framework for a phylogenetic classification in the genus Cortinarius (Basidiomycota, Agaricales) derived from morphological and molecular data. Canadian Journal of Botany 83 (11): 1457–1477. https://doi.org/10.1139/b05-107
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